13916487 has 16 divisors (see below), whose sum is σ = 20186208. Its totient is φ = 8476800.

The previous prime is 13916473. The next prime is 13916519. The reversal of 13916487 is 78461931.

13916487 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13916487 - 2⁴ = 13916471 is a prime.

It is a super-2 number, since 2×13916487² = 387337220842338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13916437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173 + ... + 5705.

It is an arithmetic number, because the mean of its divisors is an integer number (1261638).

Almost surely, 2^13916487 is an apocalyptic number.

13916487 is a deficient number, since it is larger than the sum of its proper divisors (6269721).

13916487 is a wasteful number, since it uses less digits than its factorization.

13916487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650.

The product of its digits is 36288, while the sum is 39.

The square root of 13916487 is about 3730.4808001114. The cubic root of 13916487 is about 240.5340365006.

The spelling of 13916487 in words is "thirteen million, nine hundred sixteen thousand, four hundred eighty-seven".